Adding RCD protection to existing circuits

[Andy5678]

It’s a made up scenario that I have came across a few times.

All I want to see if im on a good road of repair or if there is other ways.

Comericial office type buildings with store/warehouse.

3 phase CU, could be 2,3,4 circuits that need rcd protection.

Buzz: rcd protection required for sockets that could be used with appliances used outdoors.

 

[Andy5678]

When it comes to commercial or industrial, especially, it can be worth taking into account what problems could be caused to work output by covering a full power circuit with one rcd unit. In such situations, rcd sockets are the option, dependant upon wiring methods, of course.

Thanks, i have used RCD sockets before and is a good option, price can add up using this method and may not be as reliable long term

 

[Deleted member 26818]

When it comes to commercial or industrial, especially, it can be worth taking into account what problems could be caused to work output by covering a full power circuit with one rcd unit. In such situations, rcd sockets are the option, dependant upon wiring methods, of course.

That would be ok, as long as the installation is not horticultural/agricultural.

 

[Deleted member 26818]

It’s a made up scenario that I have came across a few times.

All I want to see if im on a good road of repair or if there is other ways.

Comericial office type buildings with store/warehouse.

3 phase CU, could be 2,3,4 circuits that need rcd protection.

Buzz: rcd protection required for sockets that could be used with appliances used outdoors.

There is no requirement to provide RCD protection for sockets that could be used with appliances used outdoors.

 

[Andy5678]

How would you do it spin? Forget the rcd protection requirements for now.

 

[buzzlightyear]

PLEASE READ .
http://www.cfecltd.co.uk/files/pdf/17_edition_factsheet_02.pdf

 

[Andy5678]

Thanks buzz but looking to stick to practical soloutions not what should and should not be protected.

 

[buzzlightyear]

print off and keep , it is for some people do not know a lot about RCD protection .

 

[Deleted member 26818]

How would you do it spin? Forget the rcd protection requirements for now.

I have a feeling that we are not getting the full story?
If the client came to me and asked me to provide RCD protection for a couple of sockets, I would offer up various solutions.
RCD sockets, new CU, stand alone RCD near the origin of the circuit, perhaps even an FCU RCD.

 

[buzzlightyear]

I have a feeling that we are not getting the full story

maybe Pinocchio not telling the truth ,but I can wait .

 

[Andy5678]

No story as I don’t want to be specific to one scenario.

Thanks for everyone’s input

 

[Nigel]

Here’s a commercial scenario for you to comment on over you nightly dram.

So there is an existing consumer unit with older style MCBs or bs88 fuses. RCBOs cannot be added to existing and customer wont pay for a new consumer unit.

My soloution is to add a garage unit onto the side. Remove main switch and feed singles through to RCBOs. Use multiple supply label, 400v etc

Anyone got any better ideas?

You can purchase seperate enclosures and just add DP RCDs. Depending on the number of circuits change the size of the enclosure.

 

[Toneyz]

I thought consumer units was a single phase distribution board and I can't understand why we are discussing a 2-way garage consumer unit taking the main switch out etc. All you require as is a Din rail enclosure for RCD's.